Suzanne and Appolinaire moved out over the weekend. They left a stuffed-full center-hall colonial for a small blue house on a steep hill in Arlington. Walk up their sidewalk a few yards, crane your neck, whip out your binoculars — and you can see the Washington Monument. It’s that close to the city.

Meanwhile, in the outer ‘burbs, there’s an empty room. It’s been empty before, of course, while Suzanne lived in Africa for three-and-a-half years. But now she’s married, and — unless they’re between houses, as they were these last three months — they won’t be moving back.

It’s all as it’s supposed to be, and I’m delighted they’re settling into their new place.

It’s just that there’s this empty room — its exposed ticking mattress cover; the blank spots on the wall where the Les Mis poster used to be; the gaps in the book shelf. Even the cello is gone.

I’ll have to get used to it, that’s all.